| Santo Stefano di Magra to Olympia Heights (Florida) | 5,014.15 mi (8,069.50 km) |
| Santo Stefano di Magra to Omaha (Nebraska) | 4,965.90 mi (7,991.85 km) |
| Santo Stefano di Magra to On Top of the World Designated Place (Florida) | 4,950.58 mi (7,967.19 km) |
| Santo Stefano di Magra to Onalaska (Wisconsin) | 4,661.36 mi (7,501.73 km) |
| Santo Stefano di Magra to Oneida (New York) | 4,070.97 mi (6,551.59 km) |
| Santo Stefano di Magra to Oneonta (New York) | 4,069.40 mi (6,549.06 km) |
| Santo Stefano di Magra to Ontario (California) | 6,107.82 mi (9,829.58 km) |
| Santo Stefano di Magra to Ontario (Oregon) | 5,523.81 mi (8,889.72 km) |
| Santo Stefano di Magra to Opa-locka (Florida) | 5,002.24 mi (8,050.33 km) |
| Santo Stefano di Magra to Opelika (Alabama) | 4,927.73 mi (7,930.41 km) |
| Santo Stefano di Magra to Opelousas (Louisiana) | 5,318.28 mi (8,558.94 km) |
| Santo Stefano di Magra to Orange (California) | 6,128.23 mi (9,862.43 km) |
| Santo Stefano di Magra to Orange (Texas) | 5,409.40 mi (8,705.59 km) |
| Santo Stefano di Magra to Orange City (Florida) | 4,912.66 mi (7,906.16 km) |
| Santo Stefano di Magra to Orangeburg (South Carolina) | 4,691.15 mi (7,549.67 km) |
